Which of the Following Structures is Included in the Respiratory

Question

Which of the following structures is included in the respiratory portion of the respiratory tract?
A) posterior nasal apertures
B) alveoli
C) carina
D) main bronchi
E) lobar bronchi

Accepted Answer

The alveoli are the small sacs in the lungs where gas exchange occurs, making them a part of the respiratory portion of the respiratory tract. The other structures listed are part of the conducting portion of the respiratory tract.